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Code Issues Packages Projects Releases 1 Wiki Activity

don't panic in handle_daemon_action

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This commit is contained in:
5ec1cff
2023-12-20 11:47:43 +08:00
parent 92ac6d4f1a
commit dce2937ba0
1 changed files with 19 additions and 16 deletions
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35
zygiskd/src/zygiskd.rs
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@@ -85,7 +85,9 @@ pub fn main() -> Result<()> {
}
_ => {
thread::spawn(move || {
handle_daemon_action(action, stream, &context);
if let Err(e) = handle_daemon_action(action, stream, &context) {
log::warn!("Error handling daemon action: {}\n{}", e, e.backtrace());
}
});
}
}
@@ -211,7 +213,7 @@ fn spawn_companion(name: &str, lib_fd: RawFd) -> Result<Option<UnixStream>> {
exit(0)
}
fn handle_daemon_action(action: DaemonSocketAction, mut stream: UnixStream, context: &Context) {
fn handle_daemon_action(action: DaemonSocketAction, mut stream: UnixStream, context: &Context) -> Result<()> {
match action {
DaemonSocketAction::RequestLogcatFd => {
loop {
@@ -219,13 +221,13 @@ fn handle_daemon_action(action: DaemonSocketAction, mut stream: UnixStream, cont
Ok(level) => level,
Err(_) => break,
};
let tag = stream.read_string().unwrap();
let message = stream.read_string().unwrap();
utils::log_raw(level as i32, &tag, &message).unwrap();
let tag = stream.read_string()?;
let message = stream.read_string()?;
utils::log_raw(level as i32, &tag, &message)?;
}
}
DaemonSocketAction::GetProcessFlags => {
let uid = stream.read_u32().unwrap() as i32;
let uid = stream.read_u32()? as i32;
let mut flags = ProcessFlags::empty();
if root_impl::uid_granted_root(uid) {
flags |= ProcessFlags::PROCESS_GRANTED_ROOT;
@@ -240,17 +242,17 @@ fn handle_daemon_action(action: DaemonSocketAction, mut stream: UnixStream, cont
}
log::trace!("Uid {} granted root: {}", uid, flags.contains(ProcessFlags::PROCESS_GRANTED_ROOT));
log::trace!("Uid {} on denylist: {}", uid, flags.contains(ProcessFlags::PROCESS_ON_DENYLIST));
stream.write_u32(flags.bits()).unwrap();
stream.write_u32(flags.bits())?;
}
DaemonSocketAction::ReadModules => {
stream.write_usize(context.modules.len()).unwrap();
stream.write_usize(context.modules.len())?;
for module in context.modules.iter() {
stream.write_string(&module.name).unwrap();
stream.send_fd(module.lib_fd.as_raw_fd()).unwrap();
stream.write_string(&module.name)?;
stream.send_fd(module.lib_fd.as_raw_fd())?;
}
}
DaemonSocketAction::RequestCompanionSocket => {
let index = stream.read_usize().unwrap();
let index = stream.read_usize()?;
let module = &context.modules[index];
let mut companion = module.companion.lock().unwrap();
if let Some(Some(sock)) = companion.as_ref() {
@@ -278,22 +280,23 @@ fn handle_daemon_action(action: DaemonSocketAction, mut stream: UnixStream, cont
Some(Some(sock)) => {
if let Err(e) = sock.send_fd(stream.as_raw_fd()) {
log::error!("Failed to send companion fd socket of module `{}`: {}", module.name, e);
stream.write_u8(0).unwrap();
stream.write_u8(0)?;
}
// Ok: Send by companion
}
_ => {
stream.write_u8(0).unwrap();
stream.write_u8(0)?;
}
}
}
DaemonSocketAction::GetModuleDir => {
let index = stream.read_usize().unwrap();
let index = stream.read_usize()?;
let module = &context.modules[index];
let dir = format!("{}/{}", constants::PATH_MODULES_DIR, module.name);
let dir = fs::File::open(dir).unwrap();
stream.send_fd(dir.as_raw_fd()).unwrap();
let dir = fs::File::open(dir)?;
stream.send_fd(dir.as_raw_fd())?;
}
_ => {}
}
Ok(())
}